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Bulkhead-D Feedthroughs / Flanges

HV Bulkhead-D Feedthrough Flanges

The HV (High Vacuum) Bulkhead-D feedthroughs were developed for high-vacuum flat-chamber-wall applications where conventional ISO NW KF or LF flanges are either not available, or just not practical.  Our universal 2x3.5 inch rectangular flanges, the Bulkhead-D flange, accommodates standard 9, 15, 25 or 50-pin Subminiature-D feedthroughs, and shares the same gasket and fastening accessories... providing simple and convenient interchangeability.

Bulkhead-D Wall Prep

Installation requires customer machining/polishing of chamber wall or bulkhead. See individual product drawings for instructions on how to prep your vacuum chamber for use with these HV Bulkhead-D feedthroughs.

Features

  • Bulkhead-D with 9, 15, 25, and 50-pins
  • High temperature rated to 150°C
  • HV compatible construction
  • Rectangular Bulkhead-D mount
  • Kapton® insulated vacuum cables
  • PEEK connectors with locking screws
  • Air-service cable assemblies
  • Custom solutions on request

Specifications

Electrical 
Voltage 1, Maximum500 VDC
Current 2, Maximum5 A
Material 
Shell, Stainless Steel Flange304
Pins, Au platedNi-Fe
Seal / InsulatorGlass-Ceramic
Connector, AirComposite
Connector, UHV 3PEEK
Connector, HV 3DAP / Stainless
Vacuum Range 4 
HV, High vacuum1x10E-8 Torr
Temperature Range 5 
Feedthrough-200 to 250°C
Flange Seal, Viton®150°C
Connector / Cable, Air80°C
Connector / Cable, UHV PEEK250°C
Connector / Cable, HV, DAP125°C
Thermal Gradient, Maximum25°C/minute
Notes 
  1. Electrical ratings are maximum test values, with vacuum side at ≤ 1x10-4 Torr. Feedthroughs are intended for instrumentation applications carrying low level signal voltage and current.
  2. Per pin maximum @ 20°C. For proper heat dissipation, a maximum of 20% of pins on a feedthrough may carry the maximum pin current at any given time.
  3. PEEK is a polyether ether ketone thermoplastic. DAP is a glass-filled diallyl phthalate.
  4. Leak tested to 5x10-10 Standard cc/sec of He.
  5. Overall assembly ratings must be adjusted to that of its lowest rated component. For cryogenic service, the lowest recommended temperature is -200°C
  6. Unless designated a 'kit,' connectors and cable assemblies are not included with feedthrough and must be purchased separately.